JoeAirPort
Posts: 6933
Joined: 8/11/2003
From: Milwaukee,
WI, USA
Status: offline
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I just set up my elevators (2-5945's) and ailerons (2-5245's per aileron) using this programmer and Joe Hunt's technique and I can tell you it is an awesome process (the only way to do it right actually).
Whenever you change your center point on the servo, your (old) endpoints get moved in closer to center. That's just the way the programmer works and it makes sense if you think about it. It moves your end points in so you don't hit your linkage endpoints and damage the linkage and/or control surface. So anytime you reset your center, you must re-program the endpoints. Once your center is perfect you never change it, and your end points don't get moved anymore (by the programmer). Then you can just play with your endpoints and perfect them. The center will just stay the same (unless you change it again of course). Also many people get confused when they set the center on the programmer and then plug the servo into the rx and it's not on center anymore. That happened to me too. The problem is that the programmer's center position is not the same as the tx's. It's closer on the Hitech tx's than the Futaba tx's. That's because Hitech's center is 1500us and Futaba is 1521us. Not only that but the sticks on the tx's don't always return to exact center so even on a Hitech the center position could be a little off. Also make sure to press "Input" on the programmer after each endpoint or center change.
As far as setting the center and end points on the programmer so they are perfect when you turn the tx on, Joe Hunt's video shows this as a method of repeated trial and error. First you must mechanically match the linkages with no power applied to any of the servos(see his other video for that). Then the programming process begins: He first programs the center and endpoints to a "good" starting value, always writing the values down on a pad of paper close by. Then he disconnects the servo from the programmer and plugs it into the rx (the tx is on). He examines how close it is and which way the center and endpoints have to go by measuring the control surface position with a ruler. He adds or subtracts a few counts to estimate the next set of numbers, writing them down before he programs them in the programmer. After programming the new numbers, he again disconnects the servo from the programmer. He plugs it into the rx and re-checks the center and endpoints. After 3-5 tries he is exactly dead on. Remember to always keep track of the numbers you use for each try on a pad of paper. To get a handle on what numbers you will start with and how much to add or subtract each try, you will just have to do it and get a feel. It took me a while to get this down, a few nights in the basement. But now I can rest assured that I am finally setting up my giant scale planes correctly. And the credit goes to the Joe hunt, he's a great teacher and information "sharer".
< Message edited by JoeAirPort -- 3/12/2005 4:13:40 AM >
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Joe AP
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All Forums >> Radios, Batteries, Clubhouse and more >> RC Radios, Transmitters, Receivers, Servos, gyros >> Radio Manufacturer Direct Support >> Hitec/MultiPlex Radios- Ask Hitec Customer Service >> Hitec Programmer - setting EPAneuFS 
Hitec Programmer - setting EPAneuFS - 
I would really like to watch them. 
RE: Hitec Programmer - setting EPAneuFS -